Pantheon\Terminus\Collections\TerminusCollection::fetch PHP Method

    public function fetch(array $options = [])
    {
        $results = $this->getCollectionData($options);
        foreach ($results as $id => $model_data) {
            if (!isset($model_data->id)) {
                $model_data->id = $id;
            }
            $this->add($model_data);
        }
        return $this;
    }